Thread: Getting
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Old February 20, 2001, 04:30 PM   #2
Chris McDermott
Senior Member
 
Join Date: March 30, 2000
Posts: 245
Bulging the case during bullet seating is a product of downward force on the case walls. The Lee crimp die "fixes" this by having a sizing ring in the die, so the case gets re-sized as part of the bullet crimping, removing any bulges.
Are all of your cases the exact same length? If not, then the longer cases will have a "heavier" crimp put on them, and that could be causing those cases to bulge. Also check your seating die setting. It could be contacting the longer cases during the bullet seating process, pushing down and bulging the case below the bullet. Back off your seating stem an eigth of a turn and see if the bulges go away.

Another hint - don't let a carbide die touch the shell plate, the carbide ring is brittle and could crack, ruining your sizing die.
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